{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1640466",
    "entityType": "User",
    "nonce": "0x70855923c73eb84ee0f9cd2bae28a27fb6963bbb9c72ff380432015244b1ed99",
    "signature": "0x7600a9edd4f0e3bb685fa2f146449b1dd39980b44efa19a5e2ca27f52266d77f057abcdd21aae6304164da45ebfe5263ab5f38302ee83ef889725bf4f73a7ec11c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}